Improvement in needle-threaders



F. R. EASPARY.

NeedIe-Thraaders.

-N0. 144,974. Patented Nov.25,1873.

UNITED STATES' PATENT OFFICE.

FELIX It. GASPARY, OF BERLIN, PRUSSIA.

IMPROVEMENT IN NEEDLE-THREADERS.

Specification forming part of Letters Patent No. 144,974,dated November25,1873; application filed May28, 1873.

To all whom it may concern:

Be it known that I, FELIX ROBERT Glis- PARY, of Berlin, in the Kingdomof Prussia,

have invented a new Improvement in Mechanism for ThreadingSewing-Machine Needles; and I do hereby declare the following, whentaken in connection with the accompanying dravungs and the letters ofreference marked thereon, to be a full, clear, and lexact description ofthe same, and which said drawings constitute part of this specification,and represent, in-

Figure l, a top view; Fig. 2, a, rear view; Fig. 3, a front view; Fig.4, a vertical central section; and in Fig. 5, a transverse section online x x.

This invention relates to an improvement in the device for threadingsewing-machine needles patented to John Stevens, April 3, 1860, of whichLetters Patent I am the assignee and the invention consists, first, inmaking the arm which carries the threading-hook elastic in itself, andformed with a groove or corrugation, so as to set upon the needle whenin the requisite position for threading the needle; second, in a shieldcombined with the said arm, and to which the said arm is hinged, so

that the arm may be swung transversely across the eye of the needle intothe said shield when not required for use.

A is the needle of a common sewing machine; B, a clamping device fittingthe needle, and secured thereto by a set-screw, C, as seen in Figs. 1and 2. To this clamping device the threader-arm D is pivoted, as at cl,the threader-arm being of sufticient length to extend from this clampingdevice down below the eye of the needle. This is formed from sheetmetal, and made elastic, so as to strike the needle between the clampingdevice and the eye, as seen in Fig. 4, and at this point of contact acorrugation, a, as denoted in Figs. 2 and 5, is

formed, which will temporarily hold the arm upon the needle. In the lineof the eye the threading-hook b is attached, so that by pressing thelower end of the arm D toward the needle the hook will be carriedthrough the eye to receive the thread, and, when released, will return,bringing the thread through the eye; then, turned to one side, will drawthe thread so far through the eye that the operator may take it in the1in gers. The eorrugation or notch a. insures the bringing of the hook bdirectly intov line with the eye of the needle. This hook may be madeadjustable vertically by means of a set-screw, n, as seen in Figs; 3 and4. From the clamping device an arm, E, extends to one side, and back ofwhich the arm D may be turned,as denoted in Fig. l, the arm E forming ashield for the protection of the threader, so that, when once set uponthe needle, the threader may remain so long as that needle is used, itin no way interfering with the operation of the machine.

I claim as my inventionl. The arm D, pivoted to the clamping device-B,made elastic, and provided at its lower end with the hook b, and withthe notch or corrugation a at its point of contact with the needle,substantially as and for the purpose specified.

2. In combination with the elastic arm D, constructed as described, andprovided with the hook b, the shield E, extending from the clampingdevice, and so as to receive the said elastic arm D, substantially asset forth.

The above specification of my invention signed by me this 18th day ofFebruary, 1873.

FELIX ROBERT GASPARY.

Vitnesses:

HER-MANN BRErsMANN,

United States Consul.

MAX WEYER.

